News reports indicate U.S. Attorney General William Barr has tapped U.S. Attorney John Durham of the District of Connecticut to examine the origins of the Russia investigation, and to determine if intelligence collection involving President Donald Trump’s campaign was appropriate.

But who is Durham, the 68-year-old who’s had a four-decade-long career as a federal prosecutor, and who has now been named to lead that part of the investigation?

1. Durham prosecuted the Boston Mob.